The Clean Water Act Amendments of 1987 (P.L. 100-4) make control of nonpoint sources of water pollution a national policy. New section 319 creates a nonpoint source management program. While the primary responsibility for developing and implementing controls on nonpoint sources is vested with the States, the Environmental Protection Agency must approve the State programs and is authorized to provide technical and financial support. After three years, EPA is required to report to Congress on the program and its success.